Airplane



Patented May 6, 1924. V v p UNITED STATES PATENT OFFICE.

FRANK 1a. VORACEK, or PORTLAND, OREGON. smrm un.

Original application filed October 18, 1920, Serial No. 417,535. Divided and this application filed April 18, 1922'; Serial No. 555,394. a

To all whom it may concern: i 19, which are also secured to the longitudi- Be it known that I, FRANK B. VoRAqnii, nal and transverse strips by fastening dea citizen of the United States, residin'gljat vices similar to the fastening devices 18. Portland, in the county of Multnomali This provides an exceedingly strong, light 5 State of Oregon, have invented new and I and rigid plane structure, which may be ful Improvements in Airplanes, of which shaped to conform to any-desired outline or the following is a specification. shape. The structure is covered with a cov- This invention relates to improvementsj' in ering 20 of suitable fabric, which is preferairplanes and is a division of an application ably arranged upon both the lower and up- 10 filed by me Oct. 18, 1920, Serial No. 417,535; per surface of the frame work.

The present improvement contemplates The invention is susceptible of various the provision of a novel form of plane struechanges in its form, proportions and minor ture, which renders the planes or details of construction and the right is strong and durable, without materially. in' herein reserved to make such changes as p 15 creasing their weight. properly fall within the scope of the ap- With the above and other objects in pended claim.

view, the invention further includes the fol= Having described the invention what is lowing novel features and details of 'con-' claimed is struction, to be hereinafter more fully de An airplane wing structure embodying a scribed, illustrated in the accompanying center layer of transversely arranged spaced drawings and pointed out in the appendedstrips in parallel relation to each other, a claim. top layer of longitudinally arranged spaced In the drawings w j p strips in parallel relation to each other and Figure 1 is a fragmentary plan view illusat right angles to each other, the spacing of 2 trating the plane structure. the strips in the top layer being equal to the Figure 2 is a longitudinal sectional view spacing of the strips in they center layer, a of the same. bottom layer corresponding in spacing and Referring in detail to the drawings,- alinement to the top layer, said three layers wherein like characters of reference de" being intimately and rigidly connected at 30 corresponding parts, the improved planet the points of intersection, marginal strips structure comprises spaced transverse strips? covering the longitudinal edges of said 16 and spaced longitudinally disposed strips Wings at the top and bottom and terminating 17, the latter being spaced above and below in a sharp point at the outer end of the the strips 16 and connected at their points'Qfwing, and a fabric coveringthe top and bot- 35 intersection by fastening devices 18. These-r tom of said wing structure, whereby a sin- 7 strips may be of any suitable or desired gle, plane wing of-uniform thickness is obterial, the object being to provide as light" tained.

a structure as consistent with strength'and' In testimony whereof I afiix my signarigidity. The upper and lower marginal ture.

edges of the wings are surrounded by strips FRANK B. VORAGEK. 

